Evaluation of the platelet volume index as a prognostic factor after aneurysmal subarachnoid hemorrhage

Abstract

Aim: Subarachnoid Hemorrhage (SAH) originating from an intracranial aneurysm is a severe and life-threatening disease, witnessed by physicians in Emergency Departments (ED). Despite the improvements in diagnostic and therapeutic techniques, morbidity and mortality rates of SAH remain high. Several parameters based on biochemical analysis and imaging techniques are used to evaluate the prognosis. However, efforts for identifying an ideal marker have not been successful. For many years, Fisher Grading System, which is based on computerized tomography (CT), has been used as a reliable predictive scale to identify SAH. Besides, the immune response plays an active role in determining neuro-damage after SAH. Recently, Mean platelet volume (MPV) to platelet count (PLT) ratio has become a trend indicator to anticipate the outcome of a patient suffering from SAH. This study aims to determine whether the comparison of the immune response marker [Platelet Volume Index (PVI)] with the Fisher Grading System could be used as a prognostic factor in subarachnoid hemorrhages with ruptured intracranial aneurysms. Methods: In this retrospective cohort study, 52 patients diagnosed with spontaneous SAH in the ED were included. The patients' ages, genders, Fisher grades, locations of the ruptured aneurysm, PVI and Glasgow Coma Scale (GCS) scores were recorded. MPV:PLT ratio was defined as MPV value(fL) x100 /PLT (per 1000). Each patient's GCS at the time of their admission to the ED was noted. An experienced radiologist graded their initial CT scans immediately according to the Fisher Grading System. Patients' GCS scores were noted by the investigators and PVI was calculated. A retrospective review was carried out regarding medical records of age, sex, and other conditions. The Pearson Correlation Coefficient was used in the analysis of the interrelationship. Results: The correlation among the PVI with GCS and Fisher Grade test was found to be positive statistically correlation. Relevant literature establishes the same result. Additionally, analyses established a significant positive correlation between the Fisher Grading Scale and the PVI among the data of ruptured aneurysms. Conclusion: The PVI can be used as a prognostic, predictive factor for SAH. Nevertheless, further studies concerning the prognosis of SAH are needed to confirm this hypothesis.

Evaluation of the Relationship of MPV, RDW and PVI Parameters with Disease Severity in Covid-19 Patients

“…Data on patient clinical outcomes and survival were obtained from the hospital information system. PVI was calculated as PVI=MPV value (fl)/Plt per 1000 x100 ( 32 ), and then recorded.…”

Spontan intraparankimal kanamalarda Platelet Volüm İndex, MPV ve RDW değerlerinin mortalite ile ilişkisinin değerlendirilmesi

“…When the PVI results, which was another parameter in our study, were evaluated, Ray et al reported that PVI value was an important marker in the course of the disease in the study conducted on patients with subarachnoid hemorrhage [41]. Dündar et al emphasized that the platelet volume and platelet medium changed in response to intra-cranial vasospasm especially in patients with subarachnoid hemorrhage [24]. This occurs especially to limit the neuron damage in the subarachnoid or intra-parenchymal area [42].…”

“…In blood analysis, the MPV, RDW, Platelet (PLT) blood parameters were recorded from the files of each patient and for the control group. Platelet Volume Index was calculated as PVI = MPV value (fl)/PLT per 1000 x100 [24], and the calculated PVI values were then recorded. The hemorrhage size of the patients with intraparenchymal hemorrhage was recorded.…”

Predictive value of plateletcrit in the diagnosis of lower extremity deep vein thrombosis

“…In this study, patients were followed for 12.1 (16.1) months and high MPV values before the procedure were found to be associated with restenosis. In another study by Dundar et al [17], the prognostic significance of MPV was shown in patients with subarachnoid hemorrhage. Cil et al [18] found that MPV value was significantly associated with DVT and was found to be an independent predictor in demonstrating intra-hospital DVT.…”